Download or read book Predicting Threshold of Audiability from Acoustic Reflex Data written by Shan R. Baker and published by . This book was released on 1977 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Clinical Experience in Using Acoustic Reflex Thresholds to Predict Sensorineural Hearing Loss written by Tad C. Farrand and published by . This book was released on 1986 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hearing Assessment with the Acoustic Reflex written by Gerald R. Popelka and published by . This book was released on 1981 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Use of Acoustic Reflex Thresholds as a Method of Predicting Uncomfortable Loudness Levels in a Sensorineural Hearing Impaired Population written by Robert Furby and published by . This book was released on 1982 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Activating signal Bandwidth Delta f on Acoustic reflex Thresholds written by Gerald R. Popelka and published by . This book was released on 1974 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Acoustic Reflex written by Shlomo Silman and published by Elsevier. This book was released on 2012-12-02 with total page 549 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Acoustic Reflex discusses the acoustic reflex - its magnitude in differential diagnosis, threshold, latency, and other related topics. The book covers different topics such as the neurophysiological basis of the acoustic middle-ear reflex and its characteristics; impedance concepts relating to it; and theories of middle-ear muscle function. The text also encompasses the evaluation of the response time of acoustic-immittance instruments; the contralateral acoustic-reflex threshold and its application for prediction of hearing loss; the magnitude and growth of the acoustic; the ipsilateral acoustic reflex; and the acoustic reflex latency. The monograph is recommended for clinicians and researchers in audiology, deaf education, hearing science, neurology, otolaryngology, physiology, and psychology. The book will also serve as a reference text in a course on impedance.
Download or read book A Comparison of Two Methods of Hearing Sensitivity Prediction from Acoustic Reflex Thresholds written by H. M. Kathard and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Use of Artificial Neural Networks to Predict Pure Tone Thresholds in Normal and Hearing Impaired Ears with Distortion Product Otoacoustic Emissions written by Rouviere De Waal and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In the evaluation of special populations, such as neonates, infants and malingerers, audiologist often have to rely heavily on objective measurements to assess hearing ability. Current objective audiological procedures such as tympanometry, the acoustic reflex, auditory brainstem response and transient evoked otoacoustic emissions, however, have certain limitations, contributing to the need of an objective, non invasive, rapid, economic test of hearing that evaluate hearing ability in a wide range of frequencies. The purpose of this study was to investigate distortion product otoacoustic emissions (DPOAEs) as an objective test of hearing. The main aim was to attempt to predict hearing ability at 500 Hz, 1000 Hz, 2000 Hz and 4000 Hz with DPOAEs and artificial neural networks (ANNs) in normal and hearing-impaired ears. Other studies that attempted to predict hearing ability with DPOAEs and conventional statistical methods were only able to distinguish between normal and impaired hearing. Back propagation neural networks were trained with the pattern of all present and absent DPOAE responses of 11 DPOAE frequencies of eight DP Grams and pure tone thresholds at 500 Hz, 1000 Hz, 2000 Hz and 4000 Hz. The neural network used the learned correlation between these two data sets to predict hearing ability at 500 Hz, 1000 Hz, 2000 Hz and 4000 Hz. Hearing ability was not predicted as a decibel value, but into one of several categories spanning 10-15dB. Results indicated that prediction accuracy of normal hearing was 92% at 500 Hz, 87% at 1000 Hz, 84% at 2000 Hz and 91% at 4000 Hz. The prediction of hearing-impaired categories was less satisfactory, due to insufficient data for the ANNs to train on. The variables age and gender were included in some of the neural network runs to determine their effect on the distortion product. Gender had only a minor positive effect on prediction accuracy, but age affected prediction accuracy considerably in a positive way. The effect of the amount of data that the neural network had to train on was also investigated. A prediction versus ear count correlation strongly suggested that the inaccurate predictions of hearing-impaired categories is not a result of an inability of DPOAEs to predict pure tone thresholds in hearing impaired ears, but a result of insufficient data for the neural network to train on. This research concluded that DPOAEs and ANNs can be used to accurately predict hearing ability within 10dB in normal and hearing-impaired ears from 500 Hz to 4000 Hz for hearing losses of up to 65dB HL.
Download or read book Hearing Loss written by National Research Council and published by National Academies Press. This book was released on 2004-12-17 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: Millions of Americans experience some degree of hearing loss. The Social Security Administration (SSA) operates programs that provide cash disability benefits to people with permanent impairments like hearing loss, if they can show that their impairments meet stringent SSA criteria and their earnings are below an SSA threshold. The National Research Council convened an expert committee at the request of the SSA to study the issues related to disability determination for people with hearing loss. This volume is the product of that study. Hearing Loss: Determining Eligibility for Social Security Benefits reviews current knowledge about hearing loss and its measurement and treatment, and provides an evaluation of the strengths and weaknesses of the current processes and criteria. It recommends changes to strengthen the disability determination process and ensure its reliability and fairness. The book addresses criteria for selection of pure tone and speech tests, guidelines for test administration, testing of hearing in noise, special issues related to testing children, and the difficulty of predicting work capacity from clinical hearing test results. It should be useful to audiologists, otolaryngologists, disability advocates, and others who are concerned with people who have hearing loss.
Download or read book Predicting Hearing Sensitivity from Acoustic Reflex Testing written by C. D. Govender and published by . This book was released on 1978 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Objective Assessment of Hearing written by James W. Hall and published by Plural Publishing. This book was released on 2009-12-01 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Comparison of Three Predictive Methods of Assessing Hearing Acuity Using Acoustic Reflex Thresholds in Neurologically Impaired Multihandicapped Children written by Paula Jameson Gardner and published by . This book was released on 1978 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of an Audiometric Technique to Identify Individuals Susceptibility to Noise written by Marie-Pier Champagne and published by . This book was released on 2010 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: BoldAbstract /bolduniderlineIntroduction/underline: As shown in previous studies (Borg, Nilsson, & Engström, 1983; Zakrisson, Borg, Liden & Nilsson, 1980) the absence of acoustic reflex (AR) increases the hearing hazards from noise exposure. Past researchers (Stach, 1987; Colletti & Sittoni, 1986; Stach & Jerger, 1984) have studied the AR as a potential indicator of individuals' susceptibility to noise. The Colletti & Sittoni (1986) study indicates a relationship between the strength of the acoustic reflex contraction and the ear's resistance to noise. However, no relationship has been established so far between the acoustic reflex characteristics and susceptibility to develop a noise-induced hearing loss.^The goal of this project is to evaluate whether the strength of contraction of the acoustic reflex in workers exposed to high level noise is correlated with their industrial acquired hearing loss.Method: Retrospective analysis was conducted on 82 workers exposed to noise environments (Leq) of approximately 90 dBA. Participants were divided into four groups according to their hearing threshold (HT) in relation to their predicted ISO 1999 distribution (predicted hearing threshold based on a normal distribution with a given age as well as time and level of exposure). Group 1 was composed of workers with excellent hearing (HT falling between the 75th and the 90th percentile of the ISO 1999 distribution), Group 2 with just above average hearing workers (HT between the 50th and the 75th percentile), and Group 3 with just below average hearing workers (HT between the 25th and the 50th percentile.^Group 4, on its side, was composed of workers that had developed the same amount of hearing loss as Group 2 workers but in a much shorter period of time (3 to 10 years in contrast to 13 to 20 years for Group 2 workers). All participants underwent an audiometric testing as well as an acoustic reflex measurement using a newly developed Interacoustic Wideband Reflectance instrument. Wideband acoustic reflexes were evaluated using 500, 1000 and 2000 Hz pure tones as well as a broad band noise. The acoustic reflex thresholds, strength of contraction as well as dynamic range were compared between the four groups for all stimulus presentations.Results: Observed results tend to show that Group 1 (more resistant to noise) has on average stronger acoustic reflex (lower acoustic reflex threshold, stronger contraction) than Group 4 (least resistant to noise).^However, due to a large inter-individual variability and relatively small number of subjects for a field study, the observed tendencies are not statistically significant. The need for further investigation to establish a correlation or a lack of correlation between AR and susceptibility to noise-induced hearing loss is clear. It would be of great interest to be able to prevent noise-induced hearing loss before it happens.
Download or read book Predicting Hearing Sensitivity Levels by the Use of the Acoustic Reflex in a Mentally Retarded Population written by Ginger A. Melancon and published by . This book was released on 1975 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Threshold of the Acoustic Reflex for Pure Tones written by Richard Lyle Franzen and published by . This book was released on 1970 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fundamentals of Audiology for the Speech Language Pathologist written by Deborah R. Welling and published by Jones & Bartlett Learning. This book was released on 2017-09-06 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamentals of Audiology for the Speech-Language Pathologist, Second Edition is specifically written for the speech-language pathologist working with hearing impaired populations. This accessible text incorporates the expertise of audiologists along with the knowledge and experience of speech-language pathologists. The theories and training of both disciplines are combined in order to facilitate the practical application of foundational audiological information into speech-language pathology practice.
Download or read book Acoustic Reflex Threshold Measurements in Infants written by Dennis A. Abahazi and published by . This book was released on 1975 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
